00598nas a2200205   4500000000100000000000100001008004100002100001200043700001800055700001700073700001200090700001900102700001400121700001300135700001500148245019700163300001200360490000600372022001400378       2018                            d1 aK. Wing1 aE. Williamson1 aJ. Carpenter1 aL. Wise1 aS. Schneeweiss1 aL. Smeeth1 aJ. Quint1 aI. Douglas00aReal-world effects of medications for chronic obstructive pulmonary disease: protocol for a UK population-based non-interventional cohort study with validation against randomised trial results  ae0194750 v8  a2044-6055